42078372361 has 4 divisors (see below), whose sum is σ = 42486900352. Its totient is φ = 41669844372.

The previous prime is 42078372331. The next prime is 42078372367. The reversal of 42078372361 is 16327387024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42078372361 - 2⁷ = 42078372233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42078372367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204263841 + ... + 204264046.

It is an arithmetic number, because the mean of its divisors is an integer number (10621725088).

Almost surely, 2^42078372361 is an apocalyptic number.

It is an amenable number.

42078372361 is a deficient number, since it is larger than the sum of its proper divisors (408527991).

42078372361 is a wasteful number, since it uses less digits than its factorization.

42078372361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408527990.

The product of its (nonzero) digits is 338688, while the sum is 43.

The spelling of 42078372361 in words is "forty-two billion, seventy-eight million, three hundred seventy-two thousand, three hundred sixty-one".